Top 10 Best Penetration Testing as a Service (PTaaS) Companies in 2025

1. Cobalt

Cobalt is the pioneer and a market leader in the PTaaS space.

Their platform connects you with a global community of over 400 highly vetted security researchers, enabling you to launch a pen-test in minutes.

The platform provides a streamlined workflow for scoping, real-time collaboration with testers, and managing findings with integrations into development tools like Jira. Their PTaaS model is a perfect fit for DevSecOps teams.

Why You Want to Buy It:

Cobalt’s PTaaS platform is the gold standard for transparency and collaboration.

You can track findings in real-time, communicate directly with the testers, and easily re-test vulnerabilities after they’ve been fixed.

The platform eliminates the administrative burden of traditional pen-testing.

✅ Best For: Fast-moving organizations and DevSecOps teams that require on-demand access to a large pool of ethical hackers for continuous security validation.

Try Cobalt here → Cobalt Official Website

2. NetSPI

NetSPI is a leading provider of enterprise penetration testing services, and its PTaaS model is a key part of its offering.

Their Resolve™ platform provides a unified view of your entire security program, with real-time tracking of vulnerabilities, attack paths, and remediation progress.

Unlike many others, NetSPI uses a large team of in-house testers, ensuring consistent quality and expertise.

Why You Want to Buy It:

NetSPI’s combination of a robust platform and a large, skilled team provides unparalleled consistency and scalability.

The Resolve™ platform gives security leaders a clear picture of their risk posture, allowing them to prioritize what matters most.

✅ Best For: Large enterprises and highly regulated industries that need a programmatic, enterprise-grade PTaaS solution with a focus on risk prioritization and continuous threat exposure management.

Try NetSPI here → NetSPI Official Website

3. Synack

Synack’s PTaaS model is built on its unique Crowdsourced Security Platform.

They provide on-demand access to the Synack Red Team (SRT), a highly vetted and curated community of ethical hackers.

The platform uses AI to automate initial scanning, allowing the human testers to focus on finding complex, high-impact vulnerabilities.

Why You Want to Buy It:

Synack’s crowdsourced model provides a level of scale and diversity of expertise that a traditional single team can’t match.

Their platform manages the entire engagement, from asset discovery to reporting, making it a highly efficient solution.

✅ Best For: Companies that need an agile and scalable PTaaS solution with on-demand access to a global pool of elite security researchers.

Try Synack here → Synack Official Website

4. BreachLock

BreachLock offers a Continuous Penetration Testing model that is a true PTaaS solution.

Their approach combines an AI-powered platform with a global team of certified ethical hackers.

The platform automates asset discovery and initial scanning, while human testers focus on validating and exploiting complex vulnerabilities.

They also provide a unified platform for managing findings from various security sources.

Why You Want to Buy It:

BreachLock’s hybrid model provides the speed of automation with the depth of human expertise.

Their unified platform streamlines the entire security testing lifecycle, from discovery to remediation, and their continuous testing model ensures your security posture is always up-to-date.

✅ Best For: Companies that need an integrated solution combining automated and manual testing, especially those with a focus on compliance (e.g., ISO, PCI DSS).

Try BreachLock here → BreachLock Official Website

5. Astra Security

Astra Security is a PTaaS provider that focuses on transforming security testing into an agile, incremental, and developer-friendly experience.

Their AI-powered continuous pentest platform runs over 13,000+ tests and integrates with DevSecOps workflows.

They provide hacker-style testing, but with real-time collaboration and end-to-end vulnerability management.

Why You Want to Buy It:

Astra Security’s platform is designed to be highly accessible and user-friendly.

Its seamless integrations with popular development tools and its continuous testing capabilities make it an excellent choice for teams that are “shifting left” on security.

✅ Best For: Small to mid-sized businesses and development teams that need an affordable, easy-to-use platform that integrates security testing directly into their CI/CD pipelines.

Try Astra Security here → Astra Security Official Website

6. Pentera

Pentera is an automated security validation platform that simulates real-world attacks.

While it is not a traditional PTaaS company in that it doesn’t use human testers for the pen-test itself, its platform provides a unique, fully automated penetration testing solution.

It continuously identifies and exploits vulnerabilities, allowing you to validate your security posture without the need for manual resources.

Why You Want to Buy It:

Pentera’s automation-first approach provides a scalable and repeatable way to ensure your security controls are effective.

It can be run as often as needed, helping to eliminate security gaps in between manual tests and reduce the need for a large in-house security team.

✅ Best For: Organizations that want to continuously and automatically validate the security of their network and applications, especially those that need to scale testing across a large number of assets.

Try Pentera here → Pentera Official Website

7. Rhino Security Labs

Rhino Security Labs is a well-respected offensive security company with a strong focus on red team and cloud security.

While they primarily offer traditional, project-based penetration tests, their services can be structured into a continuous PTaaS-like model for long-term clients.

They are known for their deep expertise and ability to find complex vulnerabilities by mimicking sophisticated threat actors.

Why You Want to Buy It:

Rhino’s red team mindset allows them to go beyond standard checklists and uncover multi-stage attack paths.

They are an excellent choice for a bespoke engagement where a high level of expertise is needed to find complex, high-impact vulnerabilities.

✅ Best For: Companies that require highly skilled, senior-level red teamers for a deep-dive, customized penetration test.

Try Rhino Security Labs here → Rhino Security Labs Official Website

8. Detectify

Detectify is an application security platform that leverages a unique, crowdsourced ethical hacker community.

Its Crowdsource™ platform automates the knowledge of over 400 ethical hackers into its scanner, allowing it to continuously test for new and emerging vulnerabilities. This hybrid approach makes it a strong PTaaS contender.

Why You Want to Buy It:

Detectify’s unique crowdsourcing model gives you access to the latest security intelligence, ensuring you are protected against emerging threats.

The platform is perfect for modern development environments where new features are deployed constantly.

✅ Best For: Companies that need continuous, automated security testing for new and unknown vulnerabilities as they emerge, especially for public-facing web applications.

Try Detectify here → Detectify Official Website

9. CyCognito

CyCognito is an External Attack Surface Management (EASM) platform that provides continuous penetration testing capabilities.

Its platform continuously discovers and maps your external assets, and then uses a PTaaS-like model to automatically and safely test for vulnerabilities and potential attack paths.

While not a traditional human-led pen-test, it provides a high-fidelity, continuous assessment.

Why You Want to Buy It:

CyCognito automates the most time-consuming parts of a pen-test (asset discovery and risk prioritization).

It provides a high-level view of your external risk and helps you identify and fix the most critical issues before they are exploited by attackers.

✅ Best For: Organizations that need a unified platform to discover and continuously test their external attack surface with a focus on real-world exploitability.

Try CyCognito here → CyCognito Official Website

10. SecurityMetrics

SecurityMetrics offers a traditional, project-based penetration testing service that can be customized to function in a PTaaS-like model.

They have a team of certified professionals and a proven methodology for finding vulnerabilities.

Their focus is on providing a tailored, compliant, and easy-to-understand test that is perfect for companies seeking to meet regulatory requirements like PCI DSS.

Why You Want to Buy It:

SecurityMetrics offers a high-quality, project-based service with a focus on detailed, actionable reporting.

While not as agile as a true PTaaS platform, it provides a valuable and compliant service with a dedicated point of contact.

✅ Best For: Companies that need to meet specific compliance requirements (e.g., PCI DSS) and want a straightforward, one-stop-shop for both a pen-test and other security services.

Try SecurityMetrics here → SecurityMetrics Official Website

Conclusion

In 2025, PTaaS has emerged as a superior model for proactive security.

The best PTaaS companies combine the invaluable expertise of human testers with the efficiency and scalability of a centralized platform.

For a truly on-demand, collaborative experience, Cobalt, Synack, and Astra Security are clear leaders. For large enterprises with complex needs, NetSPI and BreachLock offer robust, programmatic solutions.

For organizations that need continuous, automated validation, Pentera and CyCognito provide a powerful, platform-based alternative.

The right PTaaS partner will not only find vulnerabilities but will also help you embed security into the very fabric of your development and business operations.